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<div class="header">
  <div class="headertitle"><div class="title">gtest-printers.cc</div></div>
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<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">// Copyright 2007, Google Inc.</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">// All rights reserved.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment">// modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment">// met:</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment">//     * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment">// notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">//     * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment">// copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">// in the documentation and/or other materials provided with the</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">// distribution.</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">//     * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">// contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment">// this software without specific prior written permission.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">//</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">// &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment">// Google Test - The Google C++ Testing and Mocking Framework</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment">//</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment">// This file implements a universal value printer that can print a</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment">// value of any type T:</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment">//</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment">//   void ::testing::internal::UniversalPrinter&lt;T&gt;::Print(value, ostream_ptr);</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment">//</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment">// It uses the &lt;&lt; operator when possible, and prints the bytes in the</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="comment">// object otherwise.  A user can override its behavior for a class</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="comment">// type Foo by defining either operator&lt;&lt;(::std::ostream&amp;, const Foo&amp;)</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="comment">// or void PrintTo(const Foo&amp;, ::std::ostream*) in the namespace that</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="comment">// defines Foo.</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="preprocessor">#include &quot;gtest/gtest-printers.h&quot;</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="preprocessor">#include &lt;cctype&gt;</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="preprocessor">#include &lt;cstdint&gt;</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="preprocessor">#include &lt;cwchar&gt;</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="preprocessor">#include &lt;ostream&gt;</span>  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="preprocessor">#include &quot;gtest/internal/gtest-port.h&quot;</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="preprocessor">#include &quot;src/gtest-internal-inl.h&quot;</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="keyword">namespace </span>testing {</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="keyword">namespace </span>{</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="keyword">using </span>::std::ostream;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment">// Prints a segment of bytes in the given object.</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="keywordtype">void</span> PrintByteSegmentInObjectTo(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* obj_bytes, <span class="keywordtype">size_t</span> start,</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>                                <span class="keywordtype">size_t</span> count, ostream* os) {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>  <span class="keywordtype">char</span> text[5] = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i != count; i++) {</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    <span class="keyword">const</span> <span class="keywordtype">size_t</span> j = start + i;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    <span class="keywordflow">if</span> (i != 0) {</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>      <span class="comment">// Organizes the bytes into groups of 2 for easy parsing by</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>      <span class="comment">// human.</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>      <span class="keywordflow">if</span> ((j % 2) == 0)</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>        *os &lt;&lt; <span class="charliteral">&#39; &#39;</span>;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>        *os &lt;&lt; <span class="charliteral">&#39;-&#39;</span>;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    }</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    GTEST_SNPRINTF_(text, <span class="keyword">sizeof</span>(text), <span class="stringliteral">&quot;%02X&quot;</span>, obj_bytes[j]);</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    *os &lt;&lt; text;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>  }</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>}</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment">// Prints the bytes in the given value to the given ostream.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="keywordtype">void</span> PrintBytesInObjectToImpl(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* obj_bytes, <span class="keywordtype">size_t</span> count,</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>                              ostream* os) {</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>  <span class="comment">// Tells the user how big the object is.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>  *os &lt;&lt; count &lt;&lt; <span class="stringliteral">&quot;-byte object &lt;&quot;</span>;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> kThreshold = 132;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> kChunkSize = 64;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>  <span class="comment">// If the object size is bigger than kThreshold, we&#39;ll have to omit</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>  <span class="comment">// some details by printing only the first and the last kChunkSize</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>  <span class="comment">// bytes.</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>  <span class="keywordflow">if</span> (count &lt; kThreshold) {</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>    PrintByteSegmentInObjectTo(obj_bytes, 0, count, os);</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>    PrintByteSegmentInObjectTo(obj_bytes, 0, kChunkSize, os);</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>    *os &lt;&lt; <span class="stringliteral">&quot; ... &quot;</span>;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>    <span class="comment">// Rounds up to 2-byte boundary.</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>    <span class="keyword">const</span> <span class="keywordtype">size_t</span> resume_pos = (count - kChunkSize + 1) / 2 * 2;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>    PrintByteSegmentInObjectTo(obj_bytes, resume_pos, count - resume_pos, os);</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  }</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>  *os &lt;&lt; <span class="stringliteral">&quot;&gt;&quot;</span>;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>}</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">// Helpers for widening a character to char32_t. Since the standard does not</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">// specify if char / wchar_t is signed or unsigned, it is important to first</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment">// convert it to the unsigned type of the same width before widening it to</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">// char32_t.</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharType&gt;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="keywordtype">char32_t</span> ToChar32(CharType in) {</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">char32_t</span><span class="keyword">&gt;</span>(</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>      <span class="keyword">static_cast&lt;</span>typename std::make_unsigned&lt;CharType&gt;::type<span class="keyword">&gt;</span>(in));</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>}</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span> </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>}  <span class="comment">// namespace</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span> </div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="keyword">namespace </span>internal {</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment">// Delegates to PrintBytesInObjectToImpl() to print the bytes in the</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">// given object.  The delegation simplifies the implementation, which</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">// uses the &lt;&lt; operator and thus is easier done outside of the</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span><span class="comment">// ::testing::internal namespace, which contains a &lt;&lt; operator that</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment">// sometimes conflicts with the one in STL.</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span><span class="keywordtype">void</span> PrintBytesInObjectTo(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* obj_bytes, <span class="keywordtype">size_t</span> count,</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>                          ostream* os) {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>  PrintBytesInObjectToImpl(obj_bytes, count, os);</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>}</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="comment">// Depending on the value of a char (or wchar_t), we print it in one</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span><span class="comment">// of three formats:</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">//   - as is if it&#39;s a printable ASCII (e.g. &#39;a&#39;, &#39;2&#39;, &#39; &#39;),</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="comment">//   - as a hexadecimal escape sequence (e.g. &#39;\x7F&#39;), or</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="comment">//   - as a special escape sequence (e.g. &#39;\r&#39;, &#39;\n&#39;).</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span><span class="keyword">enum</span> CharFormat { kAsIs, kHexEscape, kSpecialEscape };</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">// Returns true if c is a printable ASCII character.  We test the</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">// value of c directly instead of calling isprint(), which is buggy on</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">// Windows Mobile.</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="keyword">inline</span> <span class="keywordtype">bool</span> IsPrintableAscii(<span class="keywordtype">char32_t</span> c) { <span class="keywordflow">return</span> 0x20 &lt;= c &amp;&amp; c &lt;= 0x7E; }</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">// Prints c (of type char, char8_t, char16_t, char32_t, or wchar_t) as a</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">// character literal without the quotes, escaping it when necessary; returns how</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span><span class="comment">// c was formatted.</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Char&gt;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="keyword">static</span> CharFormat PrintAsCharLiteralTo(Char c, ostream* os) {</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>  <span class="keyword">const</span> <span class="keywordtype">char32_t</span> u_c = ToChar32(c);</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>  <span class="keywordflow">switch</span> (u_c) {</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\0&#39;</span>:</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\0&quot;</span>;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\&#39;&#39;</span>:</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\&#39;&quot;</span>;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\\&#39;</span>:</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\\\&quot;</span>;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\a&#39;</span>:</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\a&quot;</span>;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\b&#39;</span>:</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\b&quot;</span>;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\f&#39;</span>:</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\f&quot;</span>;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\n&#39;</span>:</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\n&quot;</span>;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\r&#39;</span>:</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\r&quot;</span>;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\t&#39;</span>:</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\t&quot;</span>;</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\v&#39;</span>:</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\v&quot;</span>;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>    <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>      <span class="keywordflow">if</span> (IsPrintableAscii(u_c)) {</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>        *os &lt;&lt; static_cast&lt;char&gt;(c);</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>        <span class="keywordflow">return</span> kAsIs;</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>        ostream::fmtflags flags = os-&gt;flags();</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>        *os &lt;&lt; <span class="stringliteral">&quot;\\x&quot;</span> &lt;&lt; std::hex &lt;&lt; std::uppercase &lt;&lt; static_cast&lt;int&gt;(u_c);</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>        os-&gt;flags(flags);</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>        <span class="keywordflow">return</span> kHexEscape;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>      }</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>  }</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>  <span class="keywordflow">return</span> kSpecialEscape;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>}</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span> </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span><span class="comment">// Prints a char32_t c as if it&#39;s part of a string literal, escaping it when</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span><span class="comment">// necessary; returns how c was formatted.</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="keyword">static</span> CharFormat PrintAsStringLiteralTo(<span class="keywordtype">char32_t</span> c, ostream* os) {</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>  <span class="keywordflow">switch</span> (c) {</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;\&#39;&#39;</span>:</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>      *os &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>      <span class="keywordflow">return</span> kAsIs;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>    <span class="keywordflow">case</span> L<span class="charliteral">&#39;&quot;&#39;</span>:</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>      *os &lt;&lt; <span class="stringliteral">&quot;\\\&quot;&quot;</span>;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>      <span class="keywordflow">return</span> kSpecialEscape;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>    <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>      <span class="keywordflow">return</span> PrintAsCharLiteralTo(c, os);</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>  }</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>}</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span> </div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">char</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>; }</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span> </div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">signed</span> <span class="keywordtype">char</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>; }</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span> </div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>; }</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span><span class="preprocessor">#ifdef __cpp_char8_t</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">char8_t</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;u8&quot;</span>; }</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span> </div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">char16_t</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;u&quot;</span>; }</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span> </div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">char32_t</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;U&quot;</span>; }</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span> </div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* GetCharWidthPrefix(<span class="keywordtype">wchar_t</span>) { <span class="keywordflow">return</span> <span class="stringliteral">&quot;L&quot;</span>; }</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">// Prints a char c as if it&#39;s part of a string literal, escaping it when</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">// necessary; returns how c was formatted.</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="keyword">static</span> CharFormat PrintAsStringLiteralTo(<span class="keywordtype">char</span> c, ostream* os) {</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>  <span class="keywordflow">return</span> PrintAsStringLiteralTo(ToChar32(c), os);</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>}</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="preprocessor">#ifdef __cpp_char8_t</span></div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="keyword">static</span> CharFormat PrintAsStringLiteralTo(<span class="keywordtype">char8_t</span> c, ostream* os) {</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span>  <span class="keywordflow">return</span> PrintAsStringLiteralTo(ToChar32(c), os);</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>}</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="keyword">static</span> CharFormat PrintAsStringLiteralTo(<span class="keywordtype">char16_t</span> c, ostream* os) {</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>  <span class="keywordflow">return</span> PrintAsStringLiteralTo(ToChar32(c), os);</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>}</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span> </div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="keyword">static</span> CharFormat PrintAsStringLiteralTo(<span class="keywordtype">wchar_t</span> c, ostream* os) {</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>  <span class="keywordflow">return</span> PrintAsStringLiteralTo(ToChar32(c), os);</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>}</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span> </div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">// Prints a character c (of type char, char8_t, char16_t, char32_t, or wchar_t)</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span><span class="comment">// and its code. &#39;\0&#39; is printed as &quot;&#39;\\0&#39;&quot;, other unprintable characters are</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span><span class="comment">// also properly escaped using the standard C++ escape sequence.</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Char&gt;</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span><span class="keywordtype">void</span> PrintCharAndCodeTo(Char c, ostream* os) {</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>  <span class="comment">// First, print c as a literal in the most readable form we can find.</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>  *os &lt;&lt; GetCharWidthPrefix(c) &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>  <span class="keyword">const</span> CharFormat format = PrintAsCharLiteralTo(c, os);</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>  *os &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>  <span class="comment">// To aid user debugging, we also print c&#39;s code in decimal, unless</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>  <span class="comment">// it&#39;s 0 (in which case c was printed as &#39;\\0&#39;, making the code</span></div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>  <span class="comment">// obvious).</span></div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>  <span class="keywordflow">if</span> (c == 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>  *os &lt;&lt; <span class="stringliteral">&quot; (&quot;</span> &lt;&lt; <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(c);</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span> </div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>  <span class="comment">// For more convenience, we print c&#39;s code again in hexadecimal,</span></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>  <span class="comment">// unless c was already printed in the form &#39;\x##&#39; or the code is in</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>  <span class="comment">// [1, 9].</span></div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>  <span class="keywordflow">if</span> (format == kHexEscape || (1 &lt;= c &amp;&amp; c &lt;= 9)) {</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>    <span class="comment">// Do nothing.</span></div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>    *os &lt;&lt; <span class="stringliteral">&quot;, 0x&quot;</span> &lt;&lt; String::FormatHexInt(<span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(c));</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>  }</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  *os &lt;&lt; <span class="stringliteral">&quot;)&quot;</span>;</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>}</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span> </div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span><span class="keywordtype">void</span> PrintTo(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c, ::std::ostream* os) { PrintCharAndCodeTo(c, os); }</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span><span class="keywordtype">void</span> PrintTo(<span class="keywordtype">signed</span> <span class="keywordtype">char</span> c, ::std::ostream* os) { PrintCharAndCodeTo(c, os); }</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span> </div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span><span class="comment">// Prints a wchar_t as a symbol if it is printable or as its internal</span></div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span><span class="comment">// code otherwise and also as its code.  L&#39;\0&#39; is printed as &quot;L&#39;\\0&#39;&quot;.</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span><span class="keywordtype">void</span> PrintTo(<span class="keywordtype">wchar_t</span> wc, ostream* os) { PrintCharAndCodeTo(wc, os); }</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span><span class="comment">// TODO(dcheng): Consider making this delegate to PrintCharAndCodeTo() as well.</span></div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span><span class="keywordtype">void</span> PrintTo(<span class="keywordtype">char32_t</span> c, ::std::ostream* os) {</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>  *os &lt;&lt; std::hex &lt;&lt; <span class="stringliteral">&quot;U+&quot;</span> &lt;&lt; std::uppercase &lt;&lt; std::setfill(<span class="charliteral">&#39;0&#39;</span>) &lt;&lt; std::setw(4)</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>      &lt;&lt; <span class="keyword">static_cast&lt;</span>uint32_t<span class="keyword">&gt;</span>(c);</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>}</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span> </div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span><span class="comment">// gcc/clang __{u,}int128_t</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span><span class="preprocessor">#if defined(__SIZEOF_INT128__)</span></div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span><span class="keywordtype">void</span> PrintTo(__uint128_t v, ::std::ostream* os) {</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span>  <span class="keywordflow">if</span> (v == 0) {</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>    *os &lt;&lt; <span class="stringliteral">&quot;0&quot;</span>;</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span>    <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  }</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span> </div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>  <span class="comment">// Buffer large enough for ceil(log10(2^128))==39 and the null terminator</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>  <span class="keywordtype">char</span> buf[40];</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>  <span class="keywordtype">char</span>* p = buf + <span class="keyword">sizeof</span>(buf);</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span> </div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>  <span class="comment">// Some configurations have a __uint128_t, but no support for built in</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>  <span class="comment">// division. Do manual long division instead.</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span> </div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>  uint64_t high = <span class="keyword">static_cast&lt;</span>uint64_t<span class="keyword">&gt;</span>(v &gt;&gt; 64);</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  uint64_t low = <span class="keyword">static_cast&lt;</span>uint64_t<span class="keyword">&gt;</span>(v);</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span> </div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>  *--p = 0;</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>  <span class="keywordflow">while</span> (high != 0 || low != 0) {</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>    uint64_t high_mod = high % 10;</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>    high = high / 10;</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>    <span class="comment">// This is the long division algorithm specialized for a divisor of 10 and</span></div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>    <span class="comment">// only two elements.</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>    <span class="comment">// Notable values:</span></div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>    <span class="comment">//   2^64 / 10 == 1844674407370955161</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span>    <span class="comment">//   2^64 % 10 == 6</span></div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>    <span class="keyword">const</span> uint64_t carry = 6 * high_mod + low % 10;</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>    low = low / 10 + high_mod * 1844674407370955161 + carry / 10;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span> </div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>    <span class="keywordtype">char</span> digit = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span><span class="keyword">&gt;</span>(carry % 10);</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>    *--p = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span><span class="keyword">&gt;</span>(<span class="charliteral">&#39;0&#39;</span> + digit);</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span>  }</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>  *os &lt;&lt; p;</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>}</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span><span class="keywordtype">void</span> PrintTo(__int128_t v, ::std::ostream* os) {</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>  __uint128_t uv = <span class="keyword">static_cast&lt;</span>__uint128_t<span class="keyword">&gt;</span>(v);</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>  <span class="keywordflow">if</span> (v &lt; 0) {</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span>    *os &lt;&lt; <span class="stringliteral">&quot;-&quot;</span>;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>    uv = -uv;</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>  }</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>  PrintTo(uv, os);</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>}</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span><span class="preprocessor">#endif  </span><span class="comment">// __SIZEOF_INT128__</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span> </div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span><span class="comment">// Prints the given array of characters to the ostream.  CharType must be either</span></div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span><span class="comment">// char, char8_t, char16_t, char32_t, or wchar_t.</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span><span class="comment">// The array starts at begin, the length is len, it may include &#39;\0&#39; characters</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span><span class="comment">// and may not be NUL-terminated.</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharType&gt;</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>    GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>        GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ <span class="keyword">static</span> CharFormat</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>        PrintCharsAsStringTo(<span class="keyword">const</span> CharType* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> quote_prefix = GetCharWidthPrefix(*begin);</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>  *os &lt;&lt; quote_prefix &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span>;</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>  <span class="keywordtype">bool</span> is_previous_hex = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>  CharFormat print_format = kAsIs;</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> index = 0; index &lt; len; ++index) {</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>    <span class="keyword">const</span> CharType cur = begin[index];</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span>    <span class="keywordflow">if</span> (is_previous_hex &amp;&amp; IsXDigit(cur)) {</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span>      <span class="comment">// Previous character is of &#39;\x..&#39; form and this character can be</span></div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>      <span class="comment">// interpreted as another hexadecimal digit in its number. Break string to</span></div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>      <span class="comment">// disambiguate.</span></div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>      *os &lt;&lt; <span class="stringliteral">&quot;\&quot; &quot;</span> &lt;&lt; quote_prefix &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span>;</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>    }</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>    is_previous_hex = PrintAsStringLiteralTo(cur, os) == kHexEscape;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>    <span class="comment">// Remember if any characters required hex escaping.</span></div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>    <span class="keywordflow">if</span> (is_previous_hex) {</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>      print_format = kHexEscape;</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>    }</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>  }</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>  *os &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span>;</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>  <span class="keywordflow">return</span> print_format;</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>}</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span> </div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span><span class="comment">// Prints a (const) char/wchar_t array of &#39;len&#39; elements, starting at address</span></div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span><span class="comment">// &#39;begin&#39;.  CharType must be either char or wchar_t.</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharType&gt;</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span>    GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>        GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span>        UniversalPrintCharArray(<span class="keyword">const</span> CharType* begin, <span class="keywordtype">size_t</span> len,</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>                                ostream* os) {</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>  <span class="comment">// The code</span></div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>  <span class="comment">//   const char kFoo[] = &quot;foo&quot;;</span></div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>  <span class="comment">// generates an array of 4, not 3, elements, with the last one being &#39;\0&#39;.</span></div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  <span class="comment">// Therefore when printing a char array, we don&#39;t print the last element if</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>  <span class="comment">// it&#39;s &#39;\0&#39;, such that the output matches the string literal as it&#39;s</span></div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>  <span class="comment">// written in the source code.</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>  <span class="keywordflow">if</span> (len &gt; 0 &amp;&amp; begin[len - 1] == <span class="charliteral">&#39;\0&#39;</span>) {</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>    PrintCharsAsStringTo(begin, len - 1, os);</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>    <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>  }</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span> </div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>  <span class="comment">// If, however, the last element in the array is not &#39;\0&#39;, e.g.</span></div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>  <span class="comment">//    const char kFoo[] = { &#39;f&#39;, &#39;o&#39;, &#39;o&#39; };</span></div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>  <span class="comment">// we must print the entire array.  We also print a message to indicate</span></div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>  <span class="comment">// that the array is not NUL-terminated.</span></div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>  PrintCharsAsStringTo(begin, len, os);</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>  *os &lt;&lt; <span class="stringliteral">&quot; (no terminating NUL)&quot;</span>;</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>}</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span> </div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span><span class="comment">// Prints a (const) char array of &#39;len&#39; elements, starting at address &#39;begin&#39;.</span></div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span><span class="keywordtype">void</span> UniversalPrintArray(<span class="keyword">const</span> <span class="keywordtype">char</span>* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>  UniversalPrintCharArray(begin, len, os);</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>}</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span> </div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span><span class="preprocessor">#ifdef __cpp_char8_t</span></div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span><span class="comment">// Prints a (const) char8_t array of &#39;len&#39; elements, starting at address</span></div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span><span class="comment">// &#39;begin&#39;.</span></div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span><span class="keywordtype">void</span> UniversalPrintArray(<span class="keyword">const</span> <span class="keywordtype">char8_t</span>* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>  UniversalPrintCharArray(begin, len, os);</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>}</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span> </div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span><span class="comment">// Prints a (const) char16_t array of &#39;len&#39; elements, starting at address</span></div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span><span class="comment">// &#39;begin&#39;.</span></div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span><span class="keywordtype">void</span> UniversalPrintArray(<span class="keyword">const</span> <span class="keywordtype">char16_t</span>* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span>  UniversalPrintCharArray(begin, len, os);</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>}</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span> </div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span><span class="comment">// Prints a (const) char32_t array of &#39;len&#39; elements, starting at address</span></div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span><span class="comment">// &#39;begin&#39;.</span></div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span><span class="keywordtype">void</span> UniversalPrintArray(<span class="keyword">const</span> <span class="keywordtype">char32_t</span>* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>  UniversalPrintCharArray(begin, len, os);</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span>}</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span> </div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span><span class="comment">// Prints a (const) wchar_t array of &#39;len&#39; elements, starting at address</span></div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span><span class="comment">// &#39;begin&#39;.</span></div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span><span class="keywordtype">void</span> UniversalPrintArray(<span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* begin, <span class="keywordtype">size_t</span> len, ostream* os) {</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span>  UniversalPrintCharArray(begin, len, os);</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span>}</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span> </div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span><span class="keyword">namespace </span>{</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span> </div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span><span class="comment">// Prints a null-terminated C-style string to the ostream.</span></div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Char&gt;</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span><span class="keywordtype">void</span> PrintCStringTo(<span class="keyword">const</span> Char* s, ostream* os) {</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>  <span class="keywordflow">if</span> (s == <span class="keyword">nullptr</span>) {</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>    *os &lt;&lt; <span class="stringliteral">&quot;NULL&quot;</span>;</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span>    *os &lt;&lt; ImplicitCast_&lt;const void*&gt;(s) &lt;&lt; <span class="stringliteral">&quot; pointing to &quot;</span>;</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>    PrintCharsAsStringTo(s, std::char_traits&lt;Char&gt;::length(s), os);</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span>  }</div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>}</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span> </div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>}  <span class="comment">// anonymous namespace</span></div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span> </div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span><span class="keywordtype">void</span> PrintTo(<span class="keyword">const</span> <span class="keywordtype">char</span>* s, ostream* os) { PrintCStringTo(s, os); }</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span> </div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span><span class="preprocessor">#ifdef __cpp_char8_t</span></div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span><span class="keywordtype">void</span> PrintTo(<span class="keyword">const</span> <span class="keywordtype">char8_t</span>* s, ostream* os) { PrintCStringTo(s, os); }</div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span> </div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span><span class="keywordtype">void</span> PrintTo(<span class="keyword">const</span> <span class="keywordtype">char16_t</span>* s, ostream* os) { PrintCStringTo(s, os); }</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span> </div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span><span class="keywordtype">void</span> PrintTo(<span class="keyword">const</span> <span class="keywordtype">char32_t</span>* s, ostream* os) { PrintCStringTo(s, os); }</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span> </div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span><span class="comment">// MSVC compiler can be configured to define whar_t as a typedef</span></div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span><span class="comment">// of unsigned short. Defining an overload for const wchar_t* in that case</span></div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span><span class="comment">// would cause pointers to unsigned shorts be printed as wide strings,</span></div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span><span class="comment">// possibly accessing more memory than intended and causing invalid</span></div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span><span class="comment">// memory accesses. MSVC defines _NATIVE_WCHAR_T_DEFINED symbol when</span></div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span><span class="comment">// wchar_t is implemented as a native type.</span></div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span><span class="preprocessor">#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)</span></div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span><span class="comment">// Prints the given wide C string to the ostream.</span></div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span><span class="keywordtype">void</span> PrintTo(<span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* s, ostream* os) { PrintCStringTo(s, os); }</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span><span class="preprocessor">#endif  </span><span class="comment">// wchar_t is native</span></div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span> </div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span><span class="keyword">namespace </span>{</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span> </div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span><span class="keywordtype">bool</span> ContainsUnprintableControlCodes(<span class="keyword">const</span> <span class="keywordtype">char</span>* str, <span class="keywordtype">size_t</span> length) {</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* s = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(str);</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span> </div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; length; i++) {</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch = *s++;</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span>    <span class="keywordflow">if</span> (std::iscntrl(ch)) {</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>      <span class="keywordflow">switch</span> (ch) {</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>        <span class="keywordflow">case</span> <span class="charliteral">&#39;\t&#39;</span>:</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>        <span class="keywordflow">case</span> <span class="charliteral">&#39;\n&#39;</span>:</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span>        <span class="keywordflow">case</span> <span class="charliteral">&#39;\r&#39;</span>:</div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>        <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>          <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span>      }</div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span>    }</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span>  }</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>}</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span> </div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span><span class="keywordtype">bool</span> IsUTF8TrailByte(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> t) { <span class="keywordflow">return</span> 0x80 &lt;= t &amp;&amp; t &lt;= 0xbf; }</div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span> </div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span><span class="keywordtype">bool</span> IsValidUTF8(<span class="keyword">const</span> <span class="keywordtype">char</span>* str, <span class="keywordtype">size_t</span> length) {</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* s = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(str);</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span> </div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; length;) {</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> lead = s[i++];</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span> </div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>    <span class="keywordflow">if</span> (lead &lt;= 0x7f) {</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>      <span class="keywordflow">continue</span>;  <span class="comment">// single-byte character (ASCII) 0..7F</span></div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>    }</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>    <span class="keywordflow">if</span> (lead &lt; 0xc2) {</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span>      <span class="keywordflow">return</span> <span class="keyword">false</span>;  <span class="comment">// trail byte or non-shortest form</span></div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lead &lt;= 0xdf &amp;&amp; (i + 1) &lt;= length &amp;&amp; IsUTF8TrailByte(s[i])) {</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>      ++i;  <span class="comment">// 2-byte character</span></div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (0xe0 &lt;= lead &amp;&amp; lead &lt;= 0xef &amp;&amp; (i + 2) &lt;= length &amp;&amp;</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span>               IsUTF8TrailByte(s[i]) &amp;&amp; IsUTF8TrailByte(s[i + 1]) &amp;&amp;</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span>               <span class="comment">// check for non-shortest form and surrogate</span></div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span>               (lead != 0xe0 || s[i] &gt;= 0xa0) &amp;&amp;</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span>               (lead != 0xed || s[i] &lt; 0xa0)) {</div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>      i += 2;  <span class="comment">// 3-byte character</span></div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (0xf0 &lt;= lead &amp;&amp; lead &lt;= 0xf4 &amp;&amp; (i + 3) &lt;= length &amp;&amp;</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>               IsUTF8TrailByte(s[i]) &amp;&amp; IsUTF8TrailByte(s[i + 1]) &amp;&amp;</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>               IsUTF8TrailByte(s[i + 2]) &amp;&amp;</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span>               <span class="comment">// check for non-shortest form</span></div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span>               (lead != 0xf0 || s[i] &gt;= 0x90) &amp;&amp;</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>               (lead != 0xf4 || s[i] &lt; 0x90)) {</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span>      i += 3;  <span class="comment">// 4-byte character</span></div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>      <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>    }</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>  }</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>}</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span> </div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span><span class="keywordtype">void</span> ConditionalPrintAsText(<span class="keyword">const</span> <span class="keywordtype">char</span>* str, <span class="keywordtype">size_t</span> length, ostream* os) {</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span>  <span class="keywordflow">if</span> (!ContainsUnprintableControlCodes(str, length) &amp;&amp;</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span>      IsValidUTF8(str, length)) {</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>    *os &lt;&lt; <span class="stringliteral">&quot;\n    As Text: \&quot;&quot;</span> &lt;&lt; str &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span>;</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>  }</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>}</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span> </div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>}  <span class="comment">// anonymous namespace</span></div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span> </div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span><span class="keywordtype">void</span> PrintStringTo(const ::std::string&amp; s, ostream* os) {</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>  <span class="keywordflow">if</span> (PrintCharsAsStringTo(s.data(), s.size(), os) == kHexEscape) {</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>    <span class="keywordflow">if</span> (GTEST_FLAG_GET(print_utf8)) {</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>      ConditionalPrintAsText(s.data(), s.size(), os);</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span>    }</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span>  }</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>}</div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span> </div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span><span class="preprocessor">#ifdef __cpp_char8_t</span></div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span><span class="keywordtype">void</span> PrintU8StringTo(const ::std::u8string&amp; s, ostream* os) {</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>  PrintCharsAsStringTo(s.data(), s.size(), os);</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span>}</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span> </div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span><span class="keywordtype">void</span> PrintU16StringTo(const ::std::u16string&amp; s, ostream* os) {</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>  PrintCharsAsStringTo(s.data(), s.size(), os);</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span>}</div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span> </div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span><span class="keywordtype">void</span> PrintU32StringTo(const ::std::u32string&amp; s, ostream* os) {</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>  PrintCharsAsStringTo(s.data(), s.size(), os);</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>}</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span> </div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span><span class="preprocessor">#if GTEST_HAS_STD_WSTRING</span></div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span><span class="keywordtype">void</span> PrintWideStringTo(const ::std::wstring&amp; s, ostream* os) {</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>  PrintCharsAsStringTo(s.data(), s.size(), os);</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>}</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span><span class="preprocessor">#endif  </span><span class="comment">// GTEST_HAS_STD_WSTRING</span></div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span> </div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span>}  <span class="comment">// namespace internal</span></div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span> </div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>}  <span class="comment">// namespace testing</span></div>
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